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I June 9, 1936. J. E. ROBINSON CARTON BLANK Filed Sept. 2, 1953 PatentedJune 9, 1936 UNITED STATES PATENT OFFICE CARTON BLANK ApplicationSeptember 2, 1933, Serial No. 687,991

6 Claims.

This invention relates to cartons formed of corrugated board sheetmaterial for use particularly in packing frame members such as windowsashes, and to the method of forming such cartons from blanks of thismaterial.

Window sashes are usually packed for shipment in bundles of six or eightlots, these bundles being face crated with lumber and cleated on allfour vertical edges with two to four cleats. In such window crates thereare never less than eighty nails used. In order for the merchant whobuys these windows for re-selling purposes, to sell one window from thebundle, he must saw or break off with a hammer the crating, thereforeleaving eighty nail holes in the windows which will have to be puttiedby the painter before it is placed in a building.

Furthermore, with such .wooden crates the windows are exposed toaccumulation of dirt and become shopworn and marred While awaiting sale.This problem is particularly acute because of the niunbcr of windowsizes to be carried in stock, as several hundred sizes are made and arerequired to supply consumer demands.

Because of the great number of these window sizes, it has beenimpractical to carry a corresponding number of different sizes of cartonblanks with which to form shipping packages. The necessity for such avariety of sizes is caused by the requirement that the blank must bescored .and cut at the lines along which it is to be folded to fit eachseparate size window sash.

With the blank of the present invention and the method of forming itaround the stacked frames, nails and their attendant disadvantages aredispensed with. The time required to pack the stacked articles isshortened, commensurate with the elimination of the nailing operation.

Since the carton completely encloses the windows, they are protectedagainst damage from soiling and accidental blows. While in stock, thewindows may remain within the carton until sold and their depreciationbecause of shopwear is precluded.

In accordance with the provisions of this invention as to the manner ofscoring the blanks, less than a score of different size blanks may berequired to accommodate several hundred sizes of window frames. Thisconstitutes not only a saving in the quantity of blanks required, butalso facilitates selection of the proper size blank.

A further provision of the invention is the manner of slotting the blankat points where relative movement of the cut sides is to occur informing the carton. The positioning of the slot is accuratelydeterminable and uickly effected. This manner of slotting has thefurther advantage of resulting in a squarely formed carton which closelyand neatly fits the enclosed frames.

Other advantages of the invention will appear 5 from the followingdescription considered in connection with the accompanying drawing inwhich Figure 1 is a plan view of the prescored blank.

Fig. 2 is an elevation showing the manner of stacking frames on theblank. I 10 Fig. 3 is a plan of Fig. 2 showing, in addition, slots cutin the blank.

Fig. 4 is a perspective view showing the blank partially formed toindicate the order offold- Fig. 5 is a perspective of the finishedcarton showing an end partially cut out for the removal of a sash.

The frames ID are stacked at the center of the corrugated or fiber boardl2 which is p ref- 20 erably of oblong form having at least onedimension equal to, or greater than, the peripheral distance of avertical side of the stacked frames.

As shown, when Window frames are to be packed, they may be stacked instaggered relation in 25 order that the meeting rail having the inclinedface I I may overhang.

To accommodate various widths of frames on the one blank, this blank maybe provided with two sets of scorings, each adjacent and par '30 allelwith opposite sides of the blank. Preferably these two sets of scorings,l3 and I4, extend lengthwise of the blank as this permits added use ofthe scorings in the folding process. Fig. 1 of the drawing illustratesthe blank as pre- 35 pared and as it remains until used. It will benoted that it has only the lengthwise scorings and is without any crossscoring or slots. The slots are not cut until the blank is applied to anarticle, or articles, to be enclosed, as not until 40 then is theposition of the slots determined.

As a provision of the invention, the interval between the scores of oneset bears a fractional ratio to the interval between the scores of theother set of scorings. It is desirable, in this re- 45 spect, that thescores of each set be uniformly spaced and that the interval between thescores of one set be incommensurate with the interval between the scoresof the other set, preferably in the ratio of 3 to 2. In the specificembodiment 50 of the invention shown, and by way of illustration, thescores of the set l3 may be one inch apart while the scores of the set Mmay be one and a half inches apart. It will thus be seen that variouscombinations of two of these scores of 55 opposite sets give widths ofhalf inch increments, and that the number of sizes of frames which canbe accommodated is the product of the number of scores in each set.Thus, with but a few scores in total, a comparatively greater number offrame sizes can be accommodated.

Having stacked the frames upon the blank in proper relation to anopposite set of scores, the slots l5 are cut from the margin of theblank to the corners of the frames. It will be noted that the edges l6and ll of each slot converge inwardly and are joined at their inner endby a curved portion l8. Each slot is so cut that its inner end islocated at an outer corner of the frames. The cut away part between thelines I6 and I! is of substantial width to facilitate shaping the cartonand allow for slight irregularities.

The large end flaps 2| are turned against the ends of the stacked framesas shown in Fig. 4. Slots 22, corresponding to slots i5, are next cut sothat the inner curved end 23 is at a corner of the upper face of theframes. The sides 2d of the slot converge inwardly as previouslydescribed.

The small side fiaps 20 are turned inwardly against the sides of theframes, the scoring facilitating this action. The flaps 25 are presseddownwardly against the top face of the frames and the flaps 26 are bentabout the scoring at this point into engagement with the flaps 26.Thereupon the side flaps 49 are turned inwardly against the outer sidesof the flaps 253 and 26, and the bands 21 are applied to secure theflaps in place. Conveniently, marks identifying the size and type of thecontents may be applied to the carton, as shown at 28.

In opening the carton, the end flap may be out along its. bottom. andside edges as shown in Fig. 5, leaving the top edge intact to serve as ahinge. This flap in this manner serves as a closure member guarding theinside of the container against the entrance of foreign matter.

While the invention has been shown applied to the frame articles, it isapparent that it may be applied to any articles which are similar as togeneral shape, but which vary in size. When corrugated board is used forthe blank, the scores preferably are at right angles to thecorrugations. The scores may be slight indentations of one surface ofthe board without actually piercing the surface.

Since, at the outset, the carton blank'is free from any transverse slotsand has only the longitudinal scorings, the frames may be placed on theblank at any lengthwise place approximately near the center, theselection of the proper pair of scorings being the only essential. Thisis because the transverse scores are cut as determined by the frames,and because the flaps 25 overlap. Care is therefore not required toaccurately place the frames at the lengthwise center or in registrationwith any transverse markings.

I claim:

l. A carton blank of sheet material having parallel opposite sides andtwo sets of scores, each set being parallel with and spaced inwardlyfrom said parallel sides of the blank, and each set comprising aplurality of spaced parallel scores, the interval between the scores ofone set being an aliquant part of the interval between the scores of theother set.

2. An oblong carton blank of corrugated-board sheet material larger thanthe contents to be enclosed, said blank having two sets of scores, eachset being parallel with and spaced inwardly from the long sides of theblank, and each set comprising a plurality of spaced parallel scores,the interval between the scores of one set and the interval between thescores of the other set being in the ratio of three to two.

3. A carton blank of sheet material having two sets of scorings, eachset comprising a plurality of closely spaced parallel scores, and saidsets of scorings being spaced apart and parallel to accommodatetherebetween a. side of the article to be enclosed, and the intervalbetween the scores of one set bearing a fractional ratio to the intervalbetween the scores of the other set.

4. A carton blank of sheet material having two sets of scorings, eachset comprising a plurality of closely spaced parallel scores, and saidsets of scorings being spaced apart and parallel to accommodatetherebetween a side of the article to be enclose-d, and the intervalbetween the scores of one set being incommensurate with the interval ofthe other set.

5. A carton blank of sheet material having two sets of scorings, eachset comprising a plurality of closely spaced parallel scores, and saidsets of scorings being spaced apart and parallel to accommodatetherebetween a side of the article to be inclosed, and the intervalbetween the scores of one set and the interval between the scores of theother set being in the ratio of three to two.

6. A carton blank of sheet material for enclosing frame articles of thewindow sash type, having two sets of scorings, each set comprising aplurality of spaced parallel scores, said setsof scorings being spacedapart and parallel to accommodate therebetween a side of the article tobe inclosed, and cut out portions of substantial width forming parallelslots extending from outer sides of the blank perpendicularly to thescorings, said slots meeting the scores at points corresponding to thecorners of the frame articles,

the interval between the scores of one set being incommensurate with theinterval between the scores of the other set, and the sides of each slotconverging inwardly.

JAMES EDWARD ROBINSON.

